Paper-fastener.



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UNITED STATES Patented May 1o, 1904.

EDWARD L. SIBLEY, OF BENNINGTON, VERMONT.

PAPER-FASTENER.

SPECIFICATION forming part 0f Letters Patent N0. 759,400, datedMay 10, 1904.

Application filed December 26, 1903. Serial No. 186.675. (No model.)

10 all whom it ina/y concern:

Be it known that I, EDWARD L. SIBLEY, a citizen of the United States, residing at`Bennington, in the county of Bennington, and State of Vermont, have invented a certain new and useful Improvement in Paper-Fasteners, of which the following is a full, clear, and exact description.

In inserting paper-fasteners in piles of papers or other material by means of a tool, which successively punches the pile of papers and inserts the fastener, it sometimes occurs that in withdrawing the punching and inserting tool from a pile of papers the fastener also is withdrawn, there being insuiicient traction or friction between the fastener and the pile of papers to resist the frictional engagement of the tool and fastener. When the fasteners are thus withdrawn, of course they have to be inserted again at loss of time.

It is the object of this invention to provide such paper-fasteners with means to retain them in the pile of papers after having been inserted therein by a punching-tool, and in accomplishing this object I provide the limbs of the fastener with suitable outwardly-eX- tending projections or protuberances, which resist the withdrawal of the fastener from the pile of papers as the'punch is withdrawn.

In the accompanying drawings, illustrating the invention, in the several figures of which like parts are similarly designated, Figure l is a perspective view illustrating the invention in connection with a well-known form of punch. Figs. 2, 3, 4, and 5 are views of the fastener respectively in side elevation, front elevation, longitudinal section, and top plan.

The fastener is composed of parallel limbs 1 and 2, which depend from a head 3, and where, as in the instance shown, the limbs and the head are integral and the limbs are turned down from the edge of the head there will be considerable space betweenthe limbs next the head. The head is perforated at 4 for the passage of the punch 5, and this punch is adapted toy be inserted through this slot 4 between the limbs l and 2, the sides of the punch being grooved, so as to bring the limbs 1 and 2 within the level of its thickest portion in order that when the punch has been driven through a pile of papers, as indicated at 6, and it is further pushed through such pile of papers the limbs of the fastener will also follow it through the pile in such way that they may be separated on the opposite side from the head. It is usual to withdraw the punch before the limbs are separated, and it sometimes occurs that the traction or friction between the punch and the fastener is so great that the fastener also follows the withdrawing punch. To obviate this and to retain the fastener in the pile of papers, I provide the limbs next the head with any suitable outwardly-extending lateral projections 7, which being driven into the pile of papers or below their outer surface will serve to resist the withdrawal of the fastener and allow the punch to be pulled out free from the fastener.

The invention is not limited to the kind or manner of forming the projections or to the number of such projections.

The lateral projections obviously are arranged next the head, so as not to resist the insertion of the fastener.

What I claim isl. A paper-fastener, having its limbs provided with outwardly-extending lateral projections adapted to resist the withdrawal of the fastener when inserted.

2. A paper-fastener, having a head and depending limbs and adapted to be inserted in a pile of papers in the operation of punching the papers, and provided with outwardly-eX- tending lateral projections on its limbs next the head to engage the pile of papers and resist the withdrawal of the fastener as the inserting device is withdrawn.

3. As a new article of manufacture, a paper.- fastener having a slotted head, depending limbs, and outwardly-extending lateral projections on said limbs just below the head.

In testimony whereof I have hereunto set my hand this 21st day of December, A. D.

EDWARD L. SIBLEY. Witnesses:

IRvING E. GIBSON, RICHARD F. RAwsoN. 

